Home / 760,813.38-1,049,922.41-421,281.63

Finding the Fourth Proportional to 760,813.38, 1,049,922.41 and 421,281.63

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Solution

The fourth proportional to 760,813.38, 1,049,922.41 and 421,281.63 is: 581,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,813.38 : 1,049,922.41 = 421,281.63 : x
  2. Step 2: Convert to fraction form
    760,813.38/1,049,922.41 = 421,281.63/x
  3. Step 3: Cross multiply
    760,813.38x = 1,049,922.41 × 421,281.63
  4. Step 4: Simplify right side
    760,813.38x = 442,313,022,151.92
  5. Step 5: Solve for x
    x = 442,313,022,151.92/760,813.38
  6. Step 6: Final answer
    x = 581,368.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.